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environmental conditions (Architecture Flow*)

Current road conditions (e.g., surface temperature, subsurface temperature, moisture, icing, treatment status) and surface weather conditions (e.g., air temperature, wind speed, precipitation, visibility) that are measured by environmental sensors.

Roadway Environment Maintenance and Construction Vehicle

This Architecture Flow is in the following Service Packages:

• Road Weather Data Collection

This Architecture Flow is in the following Equipment Packages:

• MCV Environmental Monitoring

Data Flows*:

• fre-environmental_conditions_at_roadway

Security Considerations:

• Not Applicable

Roadway Environment Roadway

This Architecture Flow is in the following Service Packages:

• Speed Warning and Enforcement
• Variable Speed Limits
• Dynamic Lane Management and Shoulder Use
• Dynamic Roadway Warning
• Road Weather Data Collection

This Architecture Flow is in the following Equipment Packages:

• Roadway Dynamic Lane Management and Shoulder Use
• Roadway Environmental Monitoring
• Roadway Speed Monitoring and Warning
• Roadway Variable Speed Limits
• Roadway Warning

Data Flows*:

• fre-roadway_infrastructure_characteristics
• fre-physical_conditions
• fre-environmental_conditions

Security Considerations:

• Not Applicable

Roadway Environment Vehicle

This Architecture Flow is in the following Service Packages:

• Environmental Probe Surveillance

This Architecture Flow is in the following Equipment Packages:

• Vehicle Environmental Probe Support

Data Flows*:

• fre-environmental_conditions

Security Considerations:

• Not Applicable